Discharging device for the heaviest ore or rock in ore-separating machines or so-called jigs



I C. NIELSEN AND 0. HELLELAND. DISCHARGING DEVICE FOR THE HEAVIEST ORE 0R ROCK IN ORE SEPAHATING MACHINES OR SO-CALLED JIGS.

APPLICATION HL'ED JUNE 25, 1919.

1,361,171. 4 P nted Dec. 7, 1920. Y

2 i 1 i \3 i \.3 1 I i 7,, .36 9 19 11 I gwuentova .27 15 Carl M'elsen AND Olav Hells/0m! C. NIELSEN AND 0. HELLELAND. DISCHARGING DEVICE FOR THE HEAVIEST ORE 08 ROCK m ORE SEPARATING MACHINES on SO-CALLED as.

APPLICATION FILED JUNE 25. 1919.

1,361,171,, Patented Dec. 7, 1920.

3 SHEETS-SHEET 2- I C. NIELSEN AND 0. HELLELAND. DISCHARGING DEVICE FOR THE HEAVIEST ORE 0R ROCK N ORE SEPARATING MACHINES 0R- SO-CALLED JIGS.

APPLICATION FILED JUNE2'5, 1919.

1,361, 171 Patented Dec. 7, 1920.

3 SHEETS-SHEET 3.

ouirso STATES PATENT orrics.

CAR/L NIELSEN AND OLAV HELLELAND, 0F LILL-EBQ GRUBER, NORWAY, ASSIGNORS A/S STORDG KISGRUBER, 0F LILLEBO GRUBER, NORWAY.

DISCHARGING- DEVICE FOR THE HEAVIES'I ORE OB ROCK IN ORE-SEPARATING MACHINES 0R SO-CALLED JIGS.

Specification of Letters Patent.

Patented Dec. '7, 1920.

Application filed June 25, 1919. Serial No. 306,687.

To all whom it may concern Be it known that we, CARL NIELSEN and OLAV HELLELAND, both subjects of the King of Norway, residing at Lillebo Gruber, Norway, have invented certain new and useful Improvements in Discharging Devices for the Heaviest Ore or Rock in Ore-Separating Machines or So-Called Jigs; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

This invention relates to ore separators of the type commonly known as jigs, in which the ore resting on a sieve is subjected to repeated pulsations of water, which are pro.- duced by plungers or other suitable means for forcing the water upwardly through the sieve, thereby periodically causing the ore to become lifted off from the sieve and become Stratified in settling back during the return stroke of the plunger, the relatively heaviest rock finding its stratum nearest the sieve.

The general object of our invention is to provide means of discharging this layer of relatively heavy ore, which rests nearest the sieve.

A further object is to provide an apparatus which shall not impede the free flow of tailings. A further, object is to provide an apparatus, which draws the ore to be discharged from the entire width of the sieve and notmerely adjacent the discharge opening.

A further object is to effect the discharge of the heaviest ore or rock with a minimum water consumption.

Other objects will appear in the course of the following description.

In the accompanying drawings,

Figure 1 is a longitudinal section through a multicelled jig, a two celled jig being shown, showing one of our discharging devices mounted in each cell.

Fig. 2 shows in outline a plan of thejig shown in Fig. 1.

Fig. 3 1s a transverse sectlon through a jig showing our discharging device in section.

' kept in F ig. 4 is an enlarged plan of the discharg ing device.

Fig. 5 is a section on the line 55 of Fig. 4.

Fig 6 is a section on the line 6-6 of Fig. 4;.

Fig. Fig. et.

Fig. 8 is a section on the line 8-8 of Fig. 4:.

Referring particularly to Figs. 1, 2 and 3 of the drawin s, an ordinary jig may be described as fol ows:

The material is deposited on a screen or sieve mounted in a cell or compartment 17, which communicates with an adjacent cell or compartment 18 forming a prismatic cylinder in which a plunger 19 is given a vertically reciprocating motion by suitable eccentric or link motion mechanism. By filling the above mentioned cells 17 and 18 with water and starting the motion of the plunger the grains of the ore will be lifted along with the water at every downstroke of the plunger, while settling back to the sieve at every up-stroke of "the plunger. The grains of ore and rock will then gradually become separated in layers, as above stated. Structures such as have just been described are broadly old and form no part of the present invention, except as a form of separator to which the present invention may advantageously be applied.

According to our invention the tail race from each compartment 1 to the adjacent compartment 2 is formed as a shield or seal, 3, which is suitably fastened and secured to the division wall 3 of the said compartments. The seal 3 has an extension so mounted in relation to the screen 4 that a suitable chamber 3 is formed between them, with which the bed of heavy ore on the sieve in compartment 1 is in communication. The screen extending in under the seal 3, the heaviest layer of concentrate which accumulates nearest the screen will enter the receiving chamber 3 under the seal 3 and there be motion by the motion of the water in the same manner as the mixture of tailings, middlings and concentrates elsewhere in compartment 1.

This seal 3 is at its end nearest the plun- 7 is a section on the line 7-7 of ger compartment wall 7, equipped with an rendered possible by means of screw 12 and handwheel 18. A spout 14: isarranged in front of aforesaid gulde 8 for conveying the concentrates out through the front wall 15.

The discharge opening being suitably elevated with relation to the screen 4, the concentrates in the chamber 3" will form a heap .up against the gate 9, this heap declining toward the wall 7 against the plunger compartment. At every downstroke of the plunger the water flows up through the screen, is deflected by the inclined deflector 5, and will consequently flush the concentrates up-hill and out through the discharge opening 10.

The superstructure or chute 6 is provided with an open top so that the receiving chamber formed by the shield 3, the deflector 5 and the screen 4 will be in communication with the atmosphere whereby any excess air in said chamber will be vented through the chute 6. r

We claim as our invention:

1. In an ore separating machine of the jig type in which the ore is given impulses by the upward flux of water and is per mitted to become stratified by the reflux of said water, the combination of a separating compartment; a screen in saidcompartment on which the ore is separated; a partition mounted in said compartment at one end of the same and elevated from said screen to provide a receiving chamber for the heavier ores; an upwardly extending chute adjacent one end cit-said partition and in communication with the receiving chamber, said chute having an open side; and a gate adapted to close part of said open side of the chute and having a discharge opening to permit part of the chute to remain open for the passage of ore therethrough, the heavier ore collected in said receiving chamber being washed up said chute and. through said discharge opening by the impulses of the water.

2. In an ore separating machine of the jig type in which the ore is given impulses by the upward flux of water and is permitted to become stratifled by the reflux of said water, the combination of a separating compartment; a screen in said compartment on which the ore is separated; a partition mounted in said compartment at one end of the same and elevated from said screen to provide a receiving chamber for the heavier,

ores; an upwardly extending chute adjacent one end of said partition and in communication with the receiving chamber,said chute having an open side; a gate adapted to close part of said open side of the chute and having a discharge opening to permit part of the chute to remain open for the passage of ore therethrough, the heavier ore collected in said receiving chamber being washed up said chute and through said discharge opening by the impulses oft-he water; and a deflector mounted in said receiving chamber at the side thereof opposite the discharge opening and inclining upwardly from the bottom of said chamber, said deflector cans ing the ore collected in said chamber to slope upwardly toward said discharge opening and be readily discharged therethrough by the impulses of the water.

In an ore separting machine of the jig type in which the ore is given impulses by the upward flux of water and is'permitted to become stratified by the reflux of said water, the combination of a separating compartment; a screen in said compartment on which the ore is separated; an inclined shield at one end of said compartment adapted to permit the flow of tailings from said compartment to an adjacent compartment; an extension of said shield 1n said compartment and elevatedirom the screen of said compartment to form a partition to.

provide a receiving chamber for the heavier ores; an upwardly extending chute adjacent one end of said extension and communicating with the receiving chamber, said chute havii an open side; a vertically adjustable gate adapted to close part of said open side of the chute and having a discharge opening to permit part of the chute to remain open for the passage of ore therethrough, the heavier ore collected in said receiving chamber being washed up said chute and through said dis charge opening by the impulses of the water; and a deflector mounted in said receiving chamber at the side thereof opp0 site the discharge opening and inclined up wardly from the bottom of said chamber, said deflector causing the ore collected in said chamber to flow upwardly toward said discharge opening and be readily discharged therethrough by the impulses of water.

In testimony that we claim the foregoing as our invention, we have signed our names in presence of two subscribing witnesses.

CAR-L NIELSEN. ()LAV HELLl JLAND. Witnesses:

GEORGE NaooLAs Irrr, Asrnn) CLEMENTSEN. 

